[ARM] 3369/1: ep93xx: add core cirrus ep93xx support
Patch from Lennert Buytenhek
This patch adds support for the Cirrus ep93xx series of CPUs. The
ep93xx is an ARM920T based CPU with two VICs, PL010 based UARTs,
IrDA, MaverickCrunch floating point coprocessor, between 24 and 64
GPIOs, ethernet, OHCI USB and, depending on the model, pcmcia, raster
engine, graphics accelerator, IDE controller and a bunch of other
stuff.
This patch adds the core ep93xx support code, and support for the
Glomation GESBC-9312-sx and the Technologic Systems TS-72xx SBCs.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-20 17:10:13 +00:00
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/*
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* linux/include/asm-arm/arch-ep93xx/entry-macro.S
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* IRQ demultiplexing for EP93xx
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*
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* Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*/
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#include <asm/arch/ep93xx-regs.h>
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.macro disable_fiq
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.endm
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2007-02-16 21:16:32 +00:00
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.macro get_irqnr_preamble, base, tmp
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.endm
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.macro arch_ret_to_user, tmp1, tmp2
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.endm
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[ARM] 3369/1: ep93xx: add core cirrus ep93xx support
Patch from Lennert Buytenhek
This patch adds support for the Cirrus ep93xx series of CPUs. The
ep93xx is an ARM920T based CPU with two VICs, PL010 based UARTs,
IrDA, MaverickCrunch floating point coprocessor, between 24 and 64
GPIOs, ethernet, OHCI USB and, depending on the model, pcmcia, raster
engine, graphics accelerator, IDE controller and a bunch of other
stuff.
This patch adds the core ep93xx support code, and support for the
Glomation GESBC-9312-sx and the Technologic Systems TS-72xx SBCs.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-20 17:10:13 +00:00
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.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
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ldr \base, =(EP93XX_AHB_VIRT_BASE)
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orr \base, \base, #0x000b0000
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mov \irqnr, #0
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ldr \irqstat, [\base] @ lower 32 interrupts
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cmp \irqstat, #0
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bne 1001f
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eor \base, \base, #0x00070000
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ldr \irqstat, [\base] @ upper 32 interrupts
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cmp \irqstat, #0
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beq 1002f
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mov \irqnr, #0x20
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1001:
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movs \tmp, \irqstat, lsl #16
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movne \irqstat, \tmp
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addeq \irqnr, \irqnr, #16
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movs \tmp, \irqstat, lsl #8
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movne \irqstat, \tmp
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addeq \irqnr, \irqnr, #8
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movs \tmp, \irqstat, lsl #4
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movne \irqstat, \tmp
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addeq \irqnr, \irqnr, #4
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movs \tmp, \irqstat, lsl #2
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movne \irqstat, \tmp
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addeq \irqnr, \irqnr, #2
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movs \tmp, \irqstat, lsl #1
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addeq \irqnr, \irqnr, #1
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orrs \base, \base, #1
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1002:
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.endm
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